So, in stormpeaks there are a large number of crazy gigantic irises set into the sides of mountains. Entering these leads you into the insides of some crazy machine, the majority of which is walled off leaving you only able to oogle this zany contraption. However you can get behind this wall (requires flying) . At the end of the tunnel there is a balcony, near the entrance to this balcony, there are pillars, follow them up and there is a flat stone on top. If you get on to it and follow the wall, you pass through a small gap in this wall. from there you can not only explore the majority of Loken's Bargain, or any other Iris, you can get under Stormpeaks with this handy trick.
Oh yea, bonus track for this post, you can kill the wild wyrm vehicle mount for the quest "thrusting hodir's spear" resulting in people falling to their death, have not had proper time to test with it, so no promises yet, more as it develops (apologies if this is a repost)
>Edit< Tried with a druid in flight form, did not work. However, the druid is also on a different phasing level from the other character. Added screenshot!